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Catching error codes in a shell pipe
...ilhermeVieira Btw, by "different variations", I specifically meant, remove one or both of the set (for 4 different versions total), and see how that affects the output of the last echo.
– hyde
Nov 1 '14 at 20:33
...
Algorithm for classifying words for hangman difficulty levels as “Easy”,“Medium”, or “Hard”
... then:
if you guess D or E, there are no misses;
if you guess A, there's one miss (DEED);
if you guess R, there are two misses (DEED and DEAD);
if you guess any other letter, there are three misses.
So either D or E is a good guess in this situation.
(Thanks to Colonel Panic in comments for poi...
AngularJS ui-router login authentication
... the sign-in state, so
// you can return them when you're done
$rootScope.returnToState
= $rootScope.toState;
$rootScope.returnToStateParams
= $rootScope.toStateParams;
// now, send them to the s...
Android: install .apk programmatically [duplicate]
... junk on the device when the user uninstalls the application. Trust me, no one who intentionally downloads an apk on the web will want to keep the apk in the downloads folder.
– JonShipman
Oct 21 '15 at 17:41
...
What is more efficient? Using pow to square or just multiply it with itself?
...b)
TEST(3, b*b*b)
TEST(4, b*b*b*b)
TEST(5, b*b*b*b*b)
template <int exponent>
double testpow(double base, long loops)
{
double x = 0.0;
boost::posix_time::ptime startTime = now();
for (long i=0; i<loops; ++i)
{
x += std::pow(base, exponent);
x += std::pow(b...
Generating an MD5 checksum of a file
...
@TheLifelessOne: And despite @Omnifarious scary warnings, that is perfectly good use of MD5.
– President James K. Polk
Aug 7 '10 at 20:09
...
Pass a data.frame column name to a function
...
Thanks! I found the [[ solution was the only one that worked for me.
– EcologyTom
May 3 '18 at 9:15
1
...
What is the difference between class and instance attributes?
...gnificant semantic difference. In the class attribute case, there is just one object referred to. In the instance-attribute-set-at-instantiation, there can be multiple objects referred to. For instance
>>> class A: foo = []
>>> a, b = A(), A()
>>> a.foo.append(5)
>&...
How does lucene index documents?
...ge_description, but it seems to have less information in it than the older one.
In a nutshell, when lucene indexes a document it breaks it down into a number of terms. It then stores the terms in an index file where each term is associated with the documents that contain it. You could think of it a...
How to play a local video with Swift?
...or me.
private func playVideo(from file:String) {
let file = file.components(separatedBy: ".")
guard let path = Bundle.main.path(forResource: file[0], ofType:file[1]) else {
debugPrint( "\(file.joined(separator: ".")) not found")
return
}
let player = AVPlayer(url: ...